Type-writing machine.



S. L. W. MBHLIE. TYPE WRITING MACHINE.

APPLICATION FILED SEPT.15, 1909,

Patented Dec.'26, 1911.

INVENTOR ATTORNEY Q $TAT1E PATENT ldlfi,

SIDNEY LOUISEVALTER MERLIN, 01* PARIS, FRANCE.

TYPE-WRITING MACHINE.

Specification of Letters IPatent.

Patented Dec, 26', 1911.

Application filed September 15, 1909. Serial No. 517,910.

'3 flpfdiClllrlQ to typewrit-ing machines of all kinds.

curately and :with certainty, at the same The improvement is as follows: It is well known that the existing machines possess a serious drawback inasmuch as it is impossible to write between the spaces corresponding to those fixed by the rule, whenever for any reason this alteration in the writ ng is desirable. This makes it hopes sible to spread out two adjacent letters, relatively to each other, by half the distanre that separates them normally, a neccssat'y condition, for example, in the case where it is a question of writing correctly words comprising compound letters or diphthongs. The mechanism which forms the subject matter of the present invention remedies this defect, by imparting to the carriage which supports the platen a horizontal displacement relative to the rack, so as to enable the distance which separates one letter from another to be varied, ac-

timc permitting the normal spacing of the le';ters to be subsequently resumed.

The accompanying drawings illustrate. several of the improvements in question.

In these drawings, Figure 1 shows a plan view partly in section of a frame or slide and connecting organs of typewritirg machine provided with the improvements which form the subject of thepresent in ention. Fig. 2 shows an end elevation of the improved system in. question.

Referring to Fig. 1, it will be seen that It indicates the frame or carriage which supports the platen B, anitwhich moves horizontally with it upon suitable and well. known slides such as G, G, which are rigid with the frame H of the machine and partly shown in dotted lines on the drawing. The horizontal motion of the combination above set forth eoimi'nmicatcd to it by means of a rack C regulated by a toothed wheel (not shown on the drawing) which wheel or cscapcment pinion allows it to advance hy onevtooth at each key stroke.

In the improved construction shown in Fig. 1 of the drawing, the rack C is mounted upon two fulcrumed levers D and'E, placed respectively at each of the ends of the rack. ()ne of them, the lever E, is integral with a lever F by which the rack C can be raised. But this construction is not in any way obligatory, and the invention is applicable to machines of various types in which the rack is removed from its escapement pinion. or mechanism, in any other manner.

According to the present invention, the

- carriage A and the rack G are not constantly united one to the other in their horizontal movement, but they may receive in this direction a certain relative displacement as re ills each other only, and this is eficcted by means of the following mechanism. The lever D, supporting one of the ends of the rack C, is mounted upon a pivot 1., formed of a large headed screw constructed as a pivot upon which the said lever may have a. longitudinal displacement of a given amount; normally the well known rctractile spring of the can-lags A keeps the. side 2 of this latter in contact with the lever D, thus exercising its action upon the rack C. The lever E, F, supporting the other end of the rack C, is mounted upon a pivot of special construction. A screw, with double thread 3, 4;, is fixed upon the side 5 cf the carriage A. Upon the thread at of this screw is placed a sleeve 6 bearing a toothed pinion. 7, the end 8 of the said sleeve striking against, the shoulder 9 formed, for this purpose, in the lever E, F. The bearings of this latter are then "formed of the said end 8 of the sleeve 6 and oi? a suitable part 10 provided upon the screw 3, 4. The mechanism being so arranged, it will be seen that by turning the piece 7, the end 8 of the sleeve 6 strikes against the shoulder i) of the lover I] F, locked with the rack C, which is itself locked by its cscapcmentpinion, and ,causes the screw 4 to advance and consequently to advance the carriage rigidly connected to the screw 3, 4. In this manner it is possible to obtain a certain horizontal displaccn'ient oi the carriage relative to the rack (l, and this without necessitating that tnis latter should be moved relatively to the escapement pinion or mechanism.

The longitudinal displacement. ol the car- 'iage relative to the rack is obtained by incans of lover mawhanism controlling the moven'icnt of the toothed pinion 7. This part of the carriage frame.

' riage, and intended, in the normal position latter engages with a toothed wheel 11 which is itself rigidly attached. to a controlling lever 12- easily accessible to the operator, The displacements of this lever 12 are, moreover, so limited to insure'a suthcicnt rotation of the pinion 7, by means of two stops 13, 14 placed, for his purpose, on a suitable The axle 15 of the wheel 11 is mounted at any suitable point of the carriage frame. It is suitable, further, to provide a movable piece, such as 16, pivoted at 17 on the side 5 ot'the carof the latter, (as shown in the drawing), to form a wedge between the lever supporting 1 the rack and the said carriage. \Vhcnever i it is desired to bring into'pl'ay the improved 1 device which forms the object of the present invention, it is only necessary to remove the aforesaid wedge.

The improved system which forms the i subject of the present invention is (listllll guished essentially from certain systems previously known in which the platen is displaced with regard to the carriage which supports it. These prior constructions possees a very serious drawback, inasmuch as, by reason of the pressure which the pins or the little pressing cylinders eaeicise upon the sheet or sheets of paper, the said sheets do not follow exactly the longitudinal dis placement of the platen with regard to its carriage From this it results that the alterations which it is desired to make in the writing can only be made accurately upon the first sheet, and the other sheets are displaced with relation to the first one. Moreover, by reason of the relative displacement as above mentioned of the sheets with regard to the striking cylinder, the straightness of the lines is" no longer preserved.

lVith the improved system which forms the 1. In atypewriting machine, the combination' of a platen carrying frame, a platen. thereon, a rack, a rack lever connected thereto, a screw rigidly connected to the platen 'arrying frame, an internally threaded sleeve on said screw and. engaging the rack lever, a pinion mounted on said sleeve, a gear wheeloperating the pinion, a lever controllingthe ganwheel, and fixed stops suitably arranged lor limiting the movement of the controlling-lever.

2. In a typewriting machine, the combination with the platen carrying frame and the rat-it, of a threaded rod rigid with said frame; an internally threaded sleeve rotatable in a part carried lay said rack and cooperating said rod for longitudinally displacing the said rod, said frame and the platen; a toothed pinion mounted on said sleeve: :1 toothed wheel. eo'dperating with said pinion; a hand lever capable of turning said wheel through a certain angle; andtwo fixed stops so positioned as to limit,- the extent of movement of said lever. In testimony whereof, I havesigned my name to this specification in the presence of two subscribing witnesses.

SIDNEY litlUlS WALTER MERLIN.

Witnesses:

Anoai': BonnniLoN, EUGENE Picnon. 

